upgraded msgpack version to 1.2.1

Author: tushortz

requirements-prod.txt

@@ -45,7 +45,7 @@ Markdown==3.10.2
 markdown-it-py==4.2.0
 MarkupSafe==3.0.3
 mdurl==0.1.2
-msgpack==1.1.2
+msgpack==1.2.1
 mypy-extensions==1.1.0
 nodeenv==1.10.0
 openpyxl==3.1.5